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't Hart, W.G.J. (author), Kolkman, H.J. (author), Schra, L. (author)The Jominy end-quench test was applied to extruded rods of the aluminium alloys 2024 and 7075 to obtain a decreasing quench rate over the length of the rods. Subsequently the alloys were heat treated to the conditions: 2024-T4, 2024-T6, 7075-T73. A corrosion investigation and a transmission electron microscopy investigation were performed to...report 1980
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Kolkman, H.J. (author)Coarsening and solutioning of the main strengthening phase for the majority of superalloys, the y' phase, are discussed. It is shown that a general prediction of coarsening rates and solutioning temperatures is possible.report 1981
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't Hart, W.G.J. (author), Kolkman, H.J. (author), Schra, L. (author)The Jominy end-quench test was applied to rods of the alximinium alloys T010 and X TO9I to obtain a decreasing cooling rate over the length of the rods. After heat treating to a high strength T6 and an overaged TT condition the corrosion properties and the microstructure were determined related to the cooling rate. No influence of cooling rate...report 1982
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Moss, A.C. (author), 't Hart, W.G.J. (author)This investigation examined carbon/epoxy and aramide/epoxy composites in interlaminar shear and in open-hole tensile tests at 90 to the unidirectional fibre orientation. Epoxy resin was also tested under tension. Photomicroscopy and the S.E.M. were used to study the fracture surfaces. Wet tests were performed to investigate the influence of...report 1986
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- Bauer, R.A. (author), Van den Assem, A. (author), Van der Put, P.J. (author), Scarlett, B. (author), Schoonman, J. (author) conference paper 1990
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Wanhill, R.J.H. (author), Looije, C.E.W. (author)The constant amplitude and flight simulation (TURBISTAN) fatigue crack growth behaviour of Ti-6A1-4V fan disc forgings tested in the AGARD engine disc cooperative test programme was investigated by fractographic and microstructural analysis. The crack growth curve shapes and fractographic characteristics were similar. Transitions in the fatigue...report 1991
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Schra, L. (author), Wanhill, R.J.H. (author)Flight simulation fatigue growth tests were done on 1.6 mm thick sheets of the damage tolerant aluminium-lithium (Al-Li) alloys 2091-T84 and 8090-T81 in comparison with the industry standard conventional damage tolerant alloy 2024-T3. The flight simulation load spectrum, the gust spectrum MINITWIST, was used in four versions: untruncated,...report 1991
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Wanhill, R.J.H. (author)The NLR examined by fractography nine ruptured creep specimens supplied by EGT. Three specimens had been tested at 600° C and six specimens had been tested at 650° C. Internal (creep) cracking occured by transgranular microvoid coalescence, which is likely to be characteristic for standard heat treatment Inconel 718. One specimen tested at 600°...report 1994
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- Butchereit, E. (author), Schoonman, J. (author), Zandbergen, H.W. (author), Lutz-Elsner, C. (author), Schreiber, M. (author), Wang, P. (author) conference paper 1995
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The paper systematically describes the evolution of the microstructure of a styrene acrylate polymer cement concrete in relation to its mechanical properties and durability. The results presented and discussed at the present paper involve the interaction of the polymer dispersion with portland cement; the effect of the polymer modification on...journal article 1995
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- Sloof, W.G. (author) doctoral thesis 1996
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- Mantel, O.C. (author), Van der Zant, H.S.J. (author), Steinfort, A.J. (author), Traeholt, C. (author), Dekker, C. (author) journal article 1997
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Pietersen, H.S. (author)A Portland fly ash cement containing 20% of a fine fly ash and a blast furnace slag cement of approximately 290 days old were examined with analytical transmission electron microscopy, in order to examine the (local) microstructure in these cements in detail. In the Portland fly ash cement the fly ash reacted with CH resulting from the cement...journal article 1999
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Van Breugel, K. (author), Fraaij, A.L.A. (author)This paper describes an ultrasonic experimental set-up to monitor the development of the microstructure of fresh concrete at different temperatures (isothermal curing at 10, 20, 30 and 50 °C) and water/cement ratios (0.40, 0.45 and 0.55). The Ultrasonic Pulse Velocity (UPV) is used as an indication for microstructure development of concrete at...journal article 2001
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Ye, Guang (author)The aim of this thesis was to investigate and to simulate the development of the microstructure, porosity and permeability in hardening cement-based materials. Based on experimental information and the cement hydration model HYMOSTRUC, the microstructural details including porosity, connectivity of pores and pore size distribution were...doctoral thesis 2003
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- Fratila-Apachitei, E.L. (author) doctoral thesis 2004
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Elsner, A. (author)Steel producers are forced to reduce the production cost on the one hand and increase the performances of the products on the other hand, to maintain or even increase their market share. A likely method to save on production costs is to cut down the rather long production chain for conventional cold rolled strip, and to substitute certain cold...doctoral thesis 2005
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Copuroglu, O. (author)Blast furnace slag cement concrete is used extensively in a number of countries. In comparison with OPC, it is particularly well known for its excellent performance in marine environments. One dis-advantage of slag cement is its vulnerability to scaling under the combined load of freezing-thawing and de-icing salts. The current investigation was...doctoral thesis 2006
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- Ye, G. (author), Liu, X. (author), Poppe, A.M. (author), De Schutter, G. (author), Van Breugel, K. (author) journal article 2007
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Mecozzi, M.G. (author)Abstract not availabledoctoral thesis 2007